configurations/nixos/tofu/configuration.nix

@@ -1,5 +1,6 @@
 { config, pkgs, ... }:
 {
+  disko.devices.disk.main.device = "/dev/vda";
 
   services.tty-ips.enable = true;
   networking.yggdrasil = {

configurations/nixos/tofu/disko.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  config,
+  ...
+}:
+{
+  boot.loader.grub.efiSupport = lib.mkDefault true;
+  boot.loader.grub.efiInstallAsRemovable = lib.mkDefault true;
+  disko.devices = {
+    disk = {
+      "main" = {
+        # suffix is to prevent disk name collisions
+        name = "main-" + config.networking.hostName;
+        type = "disk";
+        # device = <uuid>;
+        content = {
+          type = "gpt";
+          partitions = {
+            "boot" = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+              priority = 1;
+            };
+            "ESP" = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "nofail" ];
+              };
+            };
+            "root" = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

configurations/nixos/tofu/hardware-configuration.nix

@@ -0,0 +1,36 @@
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+
+{
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "ahci"
+    "xhci_pci"
+    "virtio_pci"
+    "virtio_scsi"
+    "sr_mod"
+    "virtio_blk"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+  # virtualisation.qemu.guestAgent.enable = true;
+  services.qemuGuest.enable = true;
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp1s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.tailscale0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

modules/nixos/common/disko.nix

@@ -1,52 +0,0 @@
-{
-  lib,
-  config,
-  ...
-}:
-{
-
-  # disko.devices.disk.main.device = "/dev/vda";
-  options.internal.disko.default.enable = lib.mkEnableOption "";
-  config = lib.mkIf config.internal.disko.enable {
-    boot.loader.grub.efiSupport = lib.mkDefault true;
-    boot.loader.grub.efiInstallAsRemovable = lib.mkDefault true;
-    disko.devices = {
-      disk = {
-        "main" = {
-          # suffix is to prevent disk name collisions
-          name = "main-" + config.networking.hostName;
-          type = "disk";
-          # device = <uuid>;
-          content = {
-            type = "gpt";
-            partitions = {
-              "boot" = {
-                size = "1M";
-                type = "EF02"; # for grub MBR
-                priority = 1;
-              };
-              "ESP" = {
-                size = "512M";
-                type = "EF00";
-                content = {
-                  type = "filesystem";
-                  format = "vfat";
-                  mountpoint = "/boot";
-                  mountOptions = [ "nofail" ];
-                };
-              };
-              "root" = {
-                size = "100%";
-                content = {
-                  type = "filesystem";
-                  format = "ext4";
-                  mountpoint = "/";
-                };
-              };
-            };
-          };
-        };
-      };
-    };
-  };
-}